Oil seal



ug. 10,:1937. R. J. vEDovELl. ET 1.

' OIL SEAL Filed NOV. 26, 1934 Patented Aug. 10, 1937 UNITED STAT-ESPATENT. OFFICE 2,089,773 on. SEAL Rudolph J. Vedovell, David B. Bakerand Norman Ill.,v assigner: to Chicago Rawhide Manufacturing (Jompany,`Chicago,- Ill.. a corporation of Illinois v Appueauon November 26,1934,serial No. '154,750

4 claims.. (ci. 28an 'Ihe purpose ci this invention'ls to provide animproved sealing device of novel construction for use in closing oi thespace present about a shaft between the end of a housing and someassociated part which is capable of either end'- wise or sidewisemovement relative to the hous- -ing.

Other more specific objects and advantages will be apparent to thoseskilled in the art` uponV a full understanding of the construction,arrangement and operation of the new seal.

Two different embodiments of the invention are presented herein for thepurpose of exemplification, but it will of course be appreciated L thatthe invention is susceptible of embodiment in still other structurallymodliied formsY coming equally within the scope of the appended ciaimsi.

In the accompanying drawing:

Iig. *1 is a diametric section through a seal constructed in accordancewith the invention,

the section being taken through the seal on, the

.irregular line I-i of'Fig. 2;

Fig. 2 is a, partially broken away end Aview oi the seal shown in Fig.1;

Fig. 3 is a diametrlc section thro-ugh a seal which embodies anotherform of the invention; Fig.- 4 isa partially sectioned fragnientaryendview of the seal shown in Fig. -3; and Y Fig. 5 is a fragmentarylopposite end view of Y either the seal shownin Figs. l and e217 or'Athe' seal shown in'Figs. 31and 4. n Y l.

The seal which'lsshown inFigs. 11and12 includes a sheet metal stampinglil t in the .form of a centrally apertur'ed cup. This jeun-*shapedvstamping is provided about-:theedgeof' the aperture therein with anVinner. rim lVI-"jwhich procup. When so installed the cup, together'with the other hereinafterl described Vlttl'tsfilfthe seal, f areintended to close olf theopeningpresent-V about the shaft between'theend` of e the; housing.-

`l5 and some associated housing or shaft `part |1,"whichpart may have'some end"v play or vsidewise movement with respect'tothe housing,depending upon the nature of the paryticularj,assembly in which the sealis. used.A

of. the cup l0 inV the annular space` present between the inner andouter rimsl l l--and 'i3 there-v of, with' the planeofrthezdiskparallelwith the bottom I2 of the cup. The disk'ismaintained' `in concentric relation to the cup by. engagement witheither theinner'rlm or the outer rim of the latter and is prevented fromrotating with t respect vto the cup by means or projections I9 Lon theouter -edge of the'disk which ilt within axially extending notches 20 inthe outer rimV of the cup.

A angedpacking ring 2| of leather or other suitable material ls securedto the inner face :of

Vthe disk i8, by means of rivets .22, and the ange 23 of the packing,which is positioned about the inner edge of the ring, is snugly sleevedover the inner 'rim Il of the cup' l0 in axially slidable buteffectively sealed association with such rim.

The flange 23 oi' the packing ring is constricted v resiliently aboutthe inner rim Il of. the cup by al tensioned garter 'spring 24 which tsabout V,the ange 23 and is held in proper position by an inturned ange25 on the inner edge of a thin sheet metal stamping 26, which stampingis clamped against the inner 'face 'of the packing ring 2l 'by thepreviously mentioned rivets 22.

'I'he disk i8 and the packing ring 2l are urged away from thebottom l2ofthe cup I0 Aby a.

plurality of compressed coil springs 2l which are positioned at vregularintervals about the .seal in Vthe space present between the bottom i I2'of the cup and the opposed face of the springretaining' stamping 26. Thesprings 21 engage with the stamping l26 and are fastened thereto Inlthevfully expanded position of the seal, the f disk i8 is prevented frommoving out of the cup Vin -the edge of the outer rim I3 of the'cup andproject Vinwardly into overlapped engagement the-edgeiof the outer rim-I3 of the cup.

g VFromthe foregoing description it willbe understoodV that the improvedseal closes oi! the open- I1, in which position it is partially enclosedby f ingjabout'the. shaft which is present between the end of thehousing'V l5 and the member l1 and K e Y i g serves toicompensat'e forany endwise or radial A metal disk I8 is positioned'ln the open end l0by a. plurality of. studs 29 which are mounted movement of the memberI'I relative to the housging without in any way disturbingthe-effectiveness of zthe seal, the ilange 23 of the packing times bythe spring 2d in snug'lysleeved'but readily slidable engagement with theinnenrim Il oi' the cup I0, and the outside packing ring 30 being Imaintained at all times in engagement with both 5 the end thrust disk i8and the member l1 b the action of the pressure springs 2l.

This seal assembly, which can be inexpensively constructed and easilyinstalled, will prevent oil or grease kfrom leaking out through the gapbetween the housing I5 and the member I'i and will at the same timeprevent any foreign matter from f working its way in. K

rIn the modification whichis shown in Figs. 3 and 4, the iiange 3| ofthe inside packing ring l5 32, instead of being located about the inneredge of the ring in engagement with the inner rim 33 of the cup, islocated about the outer edge of the ring in engagement with the outerrim 3d. The

. flange 3i of the packing ring is pressed against the rim 34 by anexpansible spring metal ring 35 which contains a stepped split at 33.The spring ring 35 is heldin proper position relative to the ange 3| ofthe packing ring by anoutturned flange 31 on the outer edge of thestamping 38,

and the expansion springs 39 are secured to the stamping 38 by reverselybent anges 40 on the stamping, just as in the rst describedlembodiment.-

As a further modification, the packing ring might be flanged about bothits inner edge as shown in Fig. 1 and its outer edge as shown in Fig. 3,in a composite form of U-shaped radial section, with the inner flangepressed to form a sealed joint against the inner rim of the cup by anysuitable spring means, such as the tensioned coil spring 24- of Fig. 1,and the outer flange pressed to form a second sealed joint against theLouter rim by any suitable spring means, such as the split expander ring35 of Fig. 3, and with 40 both flange-engaging spring means heldin'their proper positions by the oiiset formations on the inner andouter edges of the ring which is used to position the end-thrustsprings.

. We claim:

l. In a seal of the character described, a. centrally apertured cup forpressed fit insertion in one end of a housing about a centrally locatedshaft, a centrally apertured end thrust disk which is positioned withinthe rim of the cup in axially spaced parallel relation to the bottom ofthe Y latter, a flanged packing ring which is secured to the inner faceof the disk with the flange of the ring in snugly sleeved but slidableassociation .with a. portion .of the cup, spring means for pressing theiiange against the cup, spring means for moving the disk and packingring away from the bottom of the cup without disturbingsuch sleevedassociation. and means on the cup for i limitingsaid movement.

\ 2. In a seal of the character described, a cen-- trally apertured cupfor pressed fit insertion in one end of a housing about a centrallylocated shaft, which cup is flanged about such aperture to provide aninner rim in concentrically spaced relation to its outer rim, acentrally apertured end 5 thrust disk which is positioned between theinner and outer rims of the cup in axially spaced relation to the bottomof the latter, a flanged packing ring which is secured to the inner faceoi the disk with the flange of the ring in snugly l0 sleeved butslidable association with the inner rim ofthe cup, spring means forpressing the flange against the cup, spring means for moving the diskand packing ring away from the bottom of the cup without disturbing suchsleeved association, l5 means on the cup for limiting said movement.

`land a connection between the disk and the outer rim of the cu'pmforpreventing any relative rotation of the disk and cup without interferingwith the movement of the disk toward or away from 20 the bottom of thecup.

3. In a seal of the character described, a centrally apertured sheetmetal stamping provided *with a radially extending iiange and an axiallyextending flange, a centrally apertured end thrust 25 disk which isassociated with the stamping in axially spaced parallel relation to thelradial flange thereof, 'a flanged packing ring which is positionedagainst the disk with the flange of the ring in snugly sleeved butslidable association 30 with the axial iiange of the stamping, springmeans for pressing the flange of the packing ring against the axial angeof the stamping, spring means for moving the disk and packing ring awayfrom the radial ange of the stamping without 35 disturbing such sleevedassociation, and means yon the stamping for limiting said movement.

4. In a seal of the character described, a centrally'apertured cup forpressed fit insertion in one end of a housing about a centrally located4o shaft, a centrally apertured end thrust disk which is positionedwithin the rim of the cup. 'in axially spaced parallel relation to thebottom of the latter, a flanged packing ring which is secured` to theinner face of the disk with the flange of 45 the ring in snugly sleevedbut slidable association with a portion of the cup, spring means formovf ing the disk and packing ring away from the bottom of the cupwithout disturbing such sleeved association, other spring means forpressing the 50 ange of the packing ring radially against the portion ofthe cup with which it is sleeved, and a spring-retaining member which is'secured against the packing ring and is provided with means forpositioning both said tlrst and second 55 mentioned spring' means. y

. RUDOLPH J. VEDOVELL.

DAVID B. BAKER. NORMIAN` O. PANZEGRAU. 60

